Wow, tough question. Sorry you had to experience this. Emotionally difficult. It depends how badly she was afflicted. The ranges vary. But if she was severely incapacitated, then I think she had a long life. Being sedentary or wheel chair bound much of your life is very tough on the body & it's functions. Relying on others for PT, & being fed properly, (nutrition) seriously affects longevity. I've known couples who had children w/ severe CB & helping them eat & finish a healthy meal was a daily challenge. The kids were quite animated in their food likes & dislikes. Most of it ended up on the floor, to the parent's frustrations. Even into adulthood. Today unaffected women this age are dropping from breast cancer, heart attacks & other illnesses. The fact that your cousin died nearing 50, living a much more difficult life than most women, is pretty amazing. jmo.
Well first of all sorry for your loss the way I think about it is life is like a roller coaster your life begins in the beginning goes through ups and downs but we never know when you're gonna finish until we get to the end that's the problem we don't know when the end is so you live 1 day at a time.